General Random Write disk speed degradation in Windows 11.

Anonymous
2021-08-23T04:42:53+00:00

After updating several machines from Windows 10 to Windows 11 users have noticed a significant degradation on Disk Random Write speed. This is quite noticeable with NVMe SSDs benchmarks, it also seems to affect SATA SSDs even if it is not as significant. See 3 samples below with 3 different devices on Windows 10 and Windows 11:

Windows 10 19043.1165 NVMe SSD SK Hynix:

Windows 11 22000.160 NVMe SSD SK Hynix:

Windows 10 19043.1165 SATA SSD ADATA SU800:

Windows 11 22000.160 SATA SSD ADATA SU800:

Windows 10 19043.1165 Samsung NVMe SSD MZVLW:

Windows 11 22000.160 Samsung NVMe SSD MZVLW:

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  1. Anonymous
    2021-11-20T00:19:02+00:00

    I just found this thread after spending 2 weeks wondering why my 2 TB Samsung 970 evo plus SSD, on a brand new Windows 11 build, was so slow on random write speeds compared to most others running Crystaldisk benchmarks. Then I realized most of the stuff on the net with my SSD is from 2019 and 2020, so it was generally Windows 10.

    I'm definitely seeing much lower random write speeds (but everything else - sequential and random reads is fine -- and matches other benches). I'm about 50% lower on random write than what others saw with Windows 10.

    Any fix by MS coming soon?

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  2. Anonymous
    2021-11-20T00:22:20+00:00

    So is there a fix coming from MS? I'm experiencing the EXACT same thing on brand new Windows 11 build with all brand new hardware. Random write is about 50% degraded in comparison. And only Random Write.

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  3. Anonymous
    2021-11-20T00:25:48+00:00

    Seeing same issue with Samsung 970 evo plus and Windows 11. Do we know if MS is really looking into this issue?

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  4. Anonymous
    2021-11-20T00:27:04+00:00

    So is there a fix coming from MS? I'm experiencing the EXACT same thing on brand new Windows 11 build with all brand new hardware. Random write is about 50% degraded in comparison. And only Random Write.

    Not that I know, I have not seen any response from MS yet ! 🤔

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  5. Anonymous
    2021-11-20T02:28:19+00:00

    I don't know anything about this forum. So how do we get this issue before the right MS people -- how do we get their attention? How do we know they got the message?

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